Hi,
Sounds like you've missed the file:
includes/modules/payment/ceon_manual_card/ceon_manual_card_admin_notification.php
Once you have copied that file across you will see the Start Date/Issue Number in the information about the order in the admin.
If that doesn't fix this for you please e-mail me at the address on the module's website.
All the best...
Conor
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